Question

· A spelunker is surveying a cave. She follows a passage
170 m straight west, then 250 m in a direction 45° east of south,
and then 280 m at 30° east of north. After a fourth displacement, she find herself back where she started use a scale drawing to determine the magnitude and direction of 4th displacement and find total displacement left​

Answer 1

Answer:

Let a body moved a distance r from the origin O at an angle

θ

with the X-axis to a point A.

Then the position vector of the body is given by

→

A

O

=

r

(

cos

θ

^

i

+

sin

θ

^

j

)

Explanation:

Given that a spelunker is surveying a cave. She follows a passage 120 m straight west.

→

A

=

−

120

^

i

Then she moved 250 m...